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Mixtures For Use As Musk Fragrance - Patent 7767640

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Mixtures For Use As Musk Fragrance - Patent 7767640 Powered By Docstoc
					
				
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Description: CROSS REFERENCE TO RELATEDAPPLICATIONThis application is a national stage of PCT/EP02/11472 filed Oct. 14, 2002 and based upon DE 101 52 992.9 filed Oct. 26, 2001, under the International Convention.FIELD OF THE INVENTIONThe present invention relates to novel mixtures of macrocyclic musk fragrances, the use of these mixtures in fragrance compositions and perfumed products containing these mixtures.BACKGROUND OF THE INVENTIONFragrances are used in numerous products to improve the odor. The impression of freshness and cleanliness in the case of, for example, air fresheners and also detergents and cleaning agents can be distinctly intensified by perfuming. The use offragrances therefore constitutes a product improvement.Compounds with a musk odor play an exceptional role in the perfume industry. Because of their unique property of harmonizing fragrance compositions, imparting personality to them and at the same time increasing their bonding, musk fragrances arenowadays found in considerable amounts in virtually every perfume oil. Accordingly, the annual world demand for musk fragrances is several thousand tonnes. The major proportion is made up of the so called "polycyclic aromatic" musk bodies. Typicalrepresentatives of this class of compounds are, for example, 1,3,4,6,7,8,8-hexahydro-4,6,6,8-hexamethylcyclopenta-(g)-2-benzo- pyrane (1) and 6-acetyl-1,1,2,4,4,7-hexamethyltetralin (2).It is known that polycyclic aromatic musk fragrances are poorly biodegradable and, as extremely lipophilic compounds, display bioaccumulative behaviour, i.e. are able to accumulate in the fatty tissue of living organisms.Macrocyclic musk fragrances, on the other hand, are accepted as biodegradable (R. Fenn, 1999, Perfumer & Flavorist, pp. 17-27; H. Gebauer, T. Bouter, 1997, Euro Cosmetics, pp.In general, however, because of the generally increasing sensitization, it is of interest to keep the amounts of fragrances that pass into the environment as low as possible.Mixtures of cylc